The SwissMiniGun is a 2.16-inch replica of a Colt Python, and it's a real gun that shoots tiny bullets that are just .35 inches long. This miniature Swiss-made revolver and its ammunition are painstakingly crafted using watchmaking technology.
Looks like the little shooter could do some damage, propelling that tiny slug at 426.5 f/sec. out of the muzzle. Wonder if it has a kick to it. No word on pricing.